Norman E. Rosenthal

Norman E. Rosenthal is an American psychiatrist, author, and researcher who first described seasonal affective disorder (SAD) and developed light therapy as a treatment. He has authored or co-authored over 300 scholarly articles and 10 popular books, including the New York Times bestseller Transcendence. He is a clinical professor of psychiatry at Georgetown Medical School and has been recognized with multiple awards for his contributions to psychiatry and public health.